The correct answer is: a) Tibeto-Burman.
The Idu Mishmi, Miju Mishmi, and Digaru Mishmi languages are all Tibeto-Burman languages. Tibeto-Burman is a language family that is spoken in the Himalayas and Southeast Asia. It is the second largest language family in Asia, after Indo-European. The Tibeto-Burman languages are divided into many different branches, and the Idu Mishmi, Miju Mishmi, and Digaru Mishmi languages are all part of the Tani branch. The Tani languages are spoken in the eastern Himalayas, and they are closely related to the Assamese language.
The Tibeto-Burman languages are a diverse group, and they show a wide range of features. Some of the Tibeto-Burman languages are tonal, while others are not. Some of the Tibeto-Burman languages have a complex system of verb conjugation, while others have a simpler system. The Tibeto-Burman languages are also spoken by a wide range of peoples, from the Tibetans in the Himalayas to the Karen people in Southeast Asia.
The Tibeto-Burman languages are a fascinating group of languages, and they are still being studied by linguists today. There is still much that we do not know about the Tibeto-Burman languages, and there are many unanswered questions about their history and development.
The other options are incorrect because:
- Tai-Kadai is a language family that is spoken in Southeast Asia. It is not the language family that the Idu Mishmi, Miju Mishmi, and Digaru Mishmi languages belong to.
- Austroasiatic is a language family that is spoken in Southeast Asia and India. It is not the language family that the Idu Mishmi, Miju Mishmi, and Digaru Mishmi languages belong to.
- Dravidian is a language family that is spoken in India. It is not the language family that the Idu Mishmi, Miju Mishmi, and Digaru Mishmi languages belong to.